大方廣佛華嚴經隨疏演義鈔 33.14

33.14

疏「以身觀身」者，即借《老子》之言。彼云「以身觀身，以家觀家，以國觀國，以天下觀天下。」彼意令近取諸身、遠取諸物，如觀一葉落知天下秋。雖不知空寂，例知同也。

Regarding the commentary's "contemplating the body by means of the body": this borrows the words of the *Laozi*. That text states: "Contemplate the body by means of the body; contemplate the family by means of the family; contemplate the state by means of the state; contemplate the world by means of the world." Its intent is to take examples from one's own body nearby, and from external things far away; just like contemplating a single falling leaf to know that autumn has arrived under heaven. Although it does not understand emptiness and quiescence, by analogy it knows they are the same.